一种持久的快乐:融合的神经过程是长时间温柔地抚摸舒适的基础
Xiaoqin Cheng1, Burkhard Maess2, Annett Schirmer1
1Institute of Psychology, University of Innsbruck, Austria.
概括
温柔的触摸的愉悦性由于不同的大脑反应而持续存在. 缓慢,中等和快速的抚摸速度差异地参与触摸路径,防止习惯并增强愉快的感觉.
科学领域:
- 神经科学是一个神经科学.
- 身体上的感觉 (somatosensation) 是一种感觉.
- 情感科学是一种情感科学.
背景情况:
- 从温柔的触摸获得的快乐可以持续很长时间,与许多其他快乐不同.
- 了解触摸持续积极情感反应背后的神经机制对于幸福至关重要.
研究的目的:
- 为了研究大脑如何适应长时间的触觉刺激.
- 在温柔的触摸中探索持续愉悦感的神经基础.
- 区分特定体感路径在情感习惯中的作用.
主要方法:
- 参与者在前臂上以不同的速度 (缓慢,中等,快速) 进行了60分钟的柔软刷毛.
- 记录了脑电图 (EEG),以测量大脑活动.
- 收集了主观的愉悦度评分和体感事件相关的潜力 (sN400).
主要成果:
- 触摸愉快度和sN400显示了对速度的反转U形反应,表明对C-触摸 (CT) 目标触摸的敏感性.
- 罗兰迪克的功率随着速度的增加而下降,这表明体感皮层激活的增加.
- 在Aβ驱动的触觉表现中观察到习惯,特别是在更快的速度,而CT相关的反应仍然很强.
结论:
- CT和Aβ体感路径对长时间的触觉刺激有不同的适应性.
- CT 路径活动变得相对放大,可能在身体接触期间促进持续的积极影响.
- 这种神经机制可能是密切的人际关系和长时间接触所带来的健康和福祉益处的基础.
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